This category covers the physiological process of breathing and how oxygen and carbon dioxide are exchanged between the lungs and blood. It includes explanations and practice questions to clarify the mechanisms involved in human respiration.
Insects use a network of tracheal tubes to transport atmospheric air within their body for respiration.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
The respiratory rhythm center in the medulla oblongata controls the basic rhythm of breathing.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
Silicosis is not a genetic disorder; it is caused by prolonged inhalation of silica dust.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
The normal respiratory rate in a healthy resting adult is around 12-16 breaths per minute.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
Silicosis is not an allergic reaction; it is an occupational lung disease caused by prolonged exposure to silica dust.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
Carbon dioxide is the primary stimulus for respiration as it affects blood pH and triggers the respiratory center in the medulla.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
Asthma is a respiratory disorder caused by the inflammation of bronchi and bronchioles, leading to difficulty in breathing and wheezing.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
Silicosis is a chronic occupational lung disease caused by prolonged exposure to silica dust.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
The diffusion membrane in alveoli is much thinner than 1 mm, allowing efficient gas exchange.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
Silicosis is an occupational respiratory disorder caused by prolonged exposure to silica dust, leading to lung fibrosis.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
The epiglottis is a thin cartilaginous flap that covers the glottis during swallowing, preventing food entry into the respiratory tract.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
A healthy adult breathes approximately 12-16 times per minute under normal conditions.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
